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/arch/xtensa/include/asm/pci.h

https://bitbucket.org/ndreys/linux-sunxi
C++ Header | 74 lines | 27 code | 20 blank | 27 comment | 0 complexity | b1088f1377f52ef33a46ea0d401261c4 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 1/*
 2 * linux/include/asm-xtensa/pci.h
 3 *
 4 * This file is subject to the terms and conditions of the GNU General Public
 5 * License.  See the file "COPYING" in the main directory of this archive
 6 * for more details.
 7 *
 8 * Copyright (C) 2001 - 2005 Tensilica Inc.
 9 */
10
11#ifndef _XTENSA_PCI_H
12#define _XTENSA_PCI_H
13
14#ifdef __KERNEL__
15
16/* Can be used to override the logic in pci_scan_bus for skipping
17 * already-configured bus numbers - to be used for buggy BIOSes
18 * or architectures with incomplete PCI setup by the loader
19 */
20
21#define pcibios_assign_all_busses()	0
22
23extern struct pci_controller* pcibios_alloc_controller(void);
24
25static inline void pcibios_set_master(struct pci_dev *dev)
26{
27	/* No special bus mastering setup handling */
28}
29
30static inline void pcibios_penalize_isa_irq(int irq)
31{
32	/* We don't do dynamic PCI IRQ allocation */
33}
34
35/* Assume some values. (We should revise them, if necessary) */
36
37#define PCIBIOS_MIN_IO		0x2000
38#define PCIBIOS_MIN_MEM		0x10000000
39
40/* Dynamic DMA mapping stuff.
41 * Xtensa has everything mapped statically like x86.
42 */
43
44#include <linux/types.h>
45#include <linux/slab.h>
46#include <asm/scatterlist.h>
47#include <linux/string.h>
48#include <asm/io.h>
49
50struct pci_dev;
51
52/* The PCI address space does equal the physical memory address space.
53 * The networking and block device layers use this boolean for bounce buffer
54 * decisions.
55 */
56
57#define PCI_DMA_BUS_IS_PHYS	(1)
58
59/* Map a range of PCI memory or I/O space for a device into user space */
60int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
61                        enum pci_mmap_state mmap_state, int write_combine);
62
63/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
64#define HAVE_PCI_MMAP	1
65
66#endif /* __KERNEL__ */
67
68/* Implement the pci_ DMA API in terms of the generic device dma_ one */
69#include <asm-generic/pci-dma-compat.h>
70
71/* Generic PCI */
72#include <asm-generic/pci.h>
73
74#endif	/* _XTENSA_PCI_H */